Pressure Reducing Station (PRS) Evaluation Study
Brown and Caldwell was tasked with evaluating the operation of 14 of HRSD’s pressure reducing stations (PRSs) in a pressurized…
21st Century Control System for a 21st Century Plant
The integrated control system, a central component of the recently completed Littleton/Englewood Wastewater Treatment Plant’s Phase 2 project, was engineered…
Quantifying Methane Evolution from Sewers: Phase 1 Results of the WERF/DeKalb County, Georgia, Case Study
Collection-system-wide methane emission estimates are being developed from field sampling of pumping stations in DeKalb County, GA. This effort is…
External Carbon Storage and Feed System to Accommodate Alternative Carbon Substrates at the Blue Plains AWTP: Challenges and Remedies to Handle Glycerol
Design of the Enhanced Nitrogen Removal Facility (ENRF) at DCWater’s Blue Plains Advanced Wastewater Treatment Plant (Blue Plains) has been…
How Much Can My Plant Treat? Using Models and Stress Testing to Determine Plant Capacity
One key question for the Napa Sanitation District (NSD) Wastewater Treatment Plant (WWTP) Master Plan Project is the actual WWTP…
Microconstituents: What to Expect in Your Permit
Microconstituents are beginning to make their way into newspaper headlines and discharge permits in the United States. Removal of microconstituents…
City of San Diego's Recycled Water Study * Demand Management Approach
The City of San Diego (City) is currently conducting a recycled water study (Study) to identify: 1) opportunities to increase…
Co-digestion at Annacis Island WWTP: Metro Vancouver*s Path to Renewable Energy and Greenhouse Gas Emissions Reductions
Annacis Island Wastewater Treatment Plant which is operated by Metro Vancouver, is leading the way in working within a carbon…
How Eagle River Water and Wastewater is Training The Next Generation
Eagle River Water and Sanitation began a process to enhance the training of its operations staff in April of 2009….
Biological Treatment of Petroleum Refinery Stripped Sour Water Using the Activated Sludge Process
A pilot study was performed over 91 days to determine if the activated sludge process could treat a segregated stripped…
Bringing CEPT Technology into the 21st Century
The City of Portland, Oregon is installing two large CSO interceptors that will increase significantly the peak flow to the…
Lessons Learned from Trouble-Shooting Anaerobic Selectors during Winter Operating Conditions
The historical mixed liquor settling performance of the City of Portland, Oregon’s Columbia Boulevard Wastewater Treatment Plant (CBWTP) has been…